However Cavaliers can be smaller than this or, more often, a bit larger.

For showing, of course, it is desirable to have them at breed standard size and weight.
Many pet Cavaliers are slightly larger and heavier, but as long as they are not overweight
and are in proportion – that is fine.

Cavaliers are sometimes confused, wrongly, with the smaller King Charles Spaniel - which is a separate breed,
with a different character.